After a company drinking party, a lightweight is left drunk, broke, and stranded after the last train. His coworker Shizuka trusts the quiet, serious man not to try anything and unexpectedly offers to let him stay until the first train. Excited to enter her home for the first time, he struggles to keep himself under control. Then Shizuka changes into thin lounge clothes and returns completely braless, her careless display pushing him to shed his timid good-boy image and become a wolf...